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Finding the Fourth Proportional to 639,379.20, 957,801.60 and 560,582.40

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Solution

The fourth proportional to 639,379.20, 957,801.60 and 560,582.40 is: 839,762.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,379.20 : 957,801.60 = 560,582.40 : x
  2. Step 2: Convert to fraction form
    639,379.20/957,801.60 = 560,582.40/x
  3. Step 3: Cross multiply
    639,379.20x = 957,801.60 × 560,582.40
  4. Step 4: Simplify right side
    639,379.20x = 536,926,719,651.84
  5. Step 5: Solve for x
    x = 536,926,719,651.84/639,379.20
  6. Step 6: Final answer
    x = 839,762.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.